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Marina86 [1]
3 years ago
12

What is the atomic number

Chemistry
2 answers:
Bas_tet [7]3 years ago
6 0

Answer:

the number of protons and neutrons in an atom

Explanation:

To find the atomic number you just have to add the protons to neutrons.

sergiy2304 [10]3 years ago
3 0

Answer:

Explanation:

is the sum of the number of protons and neutrons

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To solve this we assume that the gas is an ideal gas. Then, we can use the ideal gas equation which is expressed as PV = nRT. At a constant temperature and number of moles of the gas the product of PV is equal to some constant. At another set of condition of temperature, the constant is still the same. Calculations are as follows:

 

P1V1 =P2V2

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3 years ago
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the isotope 146c has a half life of 5730 years. what fraction of 146c in a sample with mass ,m, after 28650 years
defon

Answer:

3.1% is the fraction of the sample after 28650 years

Explanation:

The isotope decay follows the equation:

Ln[A] = -kt + Ln[A]₀

<em>Where [A] could be taken as fraction of isotope after time t, k is decay constant and [A]₀ is initial fraction of the isotope = 1</em>

<em />

k could be obtained from Half-Life as follows:

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Ln[A] = -3.4657

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3 years ago
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